NobleGrammetrie

NobleGrammetrie turns any photo into a precise measuring tool. Using photogrammetric computation (homography + depth estimation via MiDaS), the app calculates real-world dimensions of objects, lines, and polylines in your images.

How it works:

Take a photo or load one from your gallery
Set four reference points on a known surface
Enter the real size of the reference (e.g., 21×29.7 cm for A4 paper)
Draw target lines or polylines on the image
The app computes the actual measurements – in centimeters
Even simpler: If the photo contains a QR code with a known format, it is automatically used as a reference – no manual input required.

Highlights:

✅ Depth correction using a neural network (MiDaS) for higher accuracy
✅ Automatic QR code detection as a size reference
✅ Manual 4-point reference setup for any object
✅ Target lines (distance between two points)
✅ Polylines (multiple connected points)
✅ Save, load, and manage projects
✅ Export measurement images for sharing
✅ Fully offline – no internet connection required
✅ Privacy: all computation happens locally on your device
Ideal for: Architects, craftsmen, interior designers, surveyors, makers, and anyone who needs to quickly extract measurements from photos.